Chimney-cap.



CHARLES F. PRIIIIARI), OF NEW BRITAIN, (IONNICC'IIOU'I.

CHIMNEY-CAP.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application filed January 11, 1905. Serial No. 240,578.

To NN whom, I'; Ntrty concer/1,.

Be it known that l, GHAnLns E. Plummer), a citizen of the United States, residing at New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Chimney-Caps, of which the `following is a specilication.

My invention relates to improvements in chimney-caps; and the objects of my improvements are cheapness of construction, convenience of transportation and setting', and etliciency and durability when set.

ln the accompanyingdrawings, Figure l is a central vertical section of my chimney-cap on the line ,r .fof Fig. 3. Fig. L) is a vertical section of the same on the line j/ .1/ of Fig. 3 with the central flue in side elevation. Fig. 3 is a reduced plan view of the base of my chimney-cap.

l form my chimney-cap of a. mineral composition of which cement may constitute a substantial part. For convenience of manufacture, transportation, and setting the cap in place on a chimney l form the same of several parts. l prefer also to give the capsuch a form that it will serve as a substitute for the ordinary expanded or flaring topped-out portion of the chimney, such as masons lay with brick and mortar. Then this is the case, the masons in laying a new chimney will carry it up with straight and plain sides without any enlargement until it reaches a given height and then sul-mount the same with one of my caps. lVhen it is placed on an old chimney, the top courses of brick may be removed down to the said plain straight portion and my cap placed thereon. The top courses of the brick in the plain straight portion 3, upon which to place the cap, is shown in Fig. l. As shown, my cap is formed of Vfour parts or pieces, the base A, middle outer section B, cap C, and central tine D.

The base A has plain sides l of the same external dimensions as the plain straight portion 3 of the chimney and a projecting bot tom band 5 to imitate the ordinary projecting course of brick that Yform an ornamental band at this point of the chimney. The base A is also provided with a cross member 6, leaving two fines or openings T, that lead from the interior of the chimney. The said cross member is also provided with a conical cavity 8, within which is seated the lower end of the central Ilue l). A suitable drip channel or opening 9 leads from this cavity 8 to the exterior of the base, as shown in Figs. l and Q and as indicated by broken lines in Fig. 3. The cap (I is centrally perforated for the reception of the upper end of the central llue l). This flue is preferably made of a tapering form at its lower end for being seated in the cross member of the base, as shown. lt is provided with side openings l0, as shown. l have shown this central flue as of a length that projects slightly above the top of the cap; but it is evident that it may be longer, so as to project any desired distance above the said top. l also prefer to provide the middle outer section B and cap C each with a flange il for shutting down over the part on which they rest, as shown.

ln setting the cap the base A is lirst putin place on the chimney portion 3, and then the outer middle section Il may be put on. It will be the most convenient to next set the central flue l) and linally put on the cap C. The products of combustion will pass up from the chimney through the tlues T into the middle outer section B, then through the openings lO into the central flue l), and outthrough the top of the said flue at the top of the cap. This will keep the said llue warm, so as to insure a good draft. The products of combustion will pass out of t-he top instead of at the side, and at the same time the cap is stormproo'f, so that no water can run down'thc chimney. By dispensing with side exits the liability of a downward current is avoided. A small amount of air lnay sometimes enter through the drip-channel t); but it will pass upwardly through the central line without any detrimental efl'ect. On the contrary, its tendency will be to increase the draft. lVhile it is always preferred to use the central line with my chimney-cap, it is evident that the cap is a practically operative one with this central llue omitted.

I claim as my invention# l. The herein-described chimney-cap, consisting of the composition base A, composition middle outer section l, and composition cap C all formed to sit one over the other TOO With the exit at the top, the Said base having cap Seated on the said middle Outer' section the band 5 to mark the junction of the straight and iitted to the upper end of the said central IO and topped-out portions of the chimney. flue.

2. A chimney-cap Comprising the base A 5 with a cross member having' aue-seab, the (JHARLEb F' PRIGHARD' middle outer section, the central ilue resting' W tnesses: on the said Cross member and extending up i JAMES SHEPARD, through the said middle outer section, and the l SHEFFIELD H. CLARKE. 

